1 |
– |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* Holodeck display process communication |
6 |
|
*/ |
10 |
|
#include <sys/uio.h> |
11 |
|
|
12 |
|
#ifndef HDSUF |
13 |
< |
#define HDSUF ".hdi" |
13 |
> |
#define HDSUF ".hdi" |
14 |
|
#endif |
15 |
+ |
#ifndef SLAVENAME |
16 |
+ |
#define SLAVENAME "slave" |
17 |
+ |
#endif |
18 |
|
|
19 |
|
#ifndef FNONBLK |
20 |
|
#define FNONBLK O_NONBLOCK |
28 |
|
disp_open(dname) /* open the named display driver */ |
29 |
|
char *dname; |
30 |
|
{ |
31 |
< |
char dpath[128], fd0[8], fd1[8], *cmd[5]; |
32 |
< |
int i; |
33 |
< |
/* get full display program name */ |
31 |
> |
char buf[sizeof(HDGRID)+512], fd0[8], fd1[8], *cmd[5], *sfn; |
32 |
> |
int i, n, len; |
33 |
> |
|
34 |
> |
if (!strcmp(dname, SLAVENAME)) { |
35 |
> |
dpd[0] = 0; /* read from stdin */ |
36 |
> |
dpout = stdout; /* write to stdout */ |
37 |
> |
dpd[2] = -1; /* we're the slave process */ |
38 |
> |
} else { |
39 |
> |
/* get full display program name */ |
40 |
|
#ifdef DEVPATH |
41 |
< |
sprintf(dpath, "%s/%s%s", DEVPATH, dname, HDSUF); |
41 |
> |
sprintf(buf, "%s/%s%s", DEVPATH, dname, HDSUF); |
42 |
|
#else |
43 |
< |
sprintf(dpath, "dev/%s%s", dname, HDSUF); |
43 |
> |
sprintf(buf, "dev/%s%s", dname, HDSUF); |
44 |
|
#endif |
45 |
< |
/* dup stdin and stdout */ |
46 |
< |
if (readinp) |
47 |
< |
sprintf(fd0, "%d", dup(0)); |
48 |
< |
else |
49 |
< |
strcpy(fd0, "-1"); |
50 |
< |
sprintf(fd1, "%d", dup(1)); |
51 |
< |
/* start the display process */ |
52 |
< |
cmd[0] = dpath; |
53 |
< |
cmd[1] = froot; cmd[2] = fd1; cmd[3] = fd0; |
54 |
< |
cmd[4] = NULL; |
55 |
< |
i = open_process(dpd, cmd); |
56 |
< |
if (i <= 0) |
57 |
< |
error(USER, "cannot start display process"); |
58 |
< |
if ((dpout = fdopen(dpd[1], "w")) == NULL) |
59 |
< |
error(SYSTEM, "cannot associate FILE with display pipe"); |
45 |
> |
/* dup stdin and stdout */ |
46 |
> |
if (readinp) |
47 |
> |
sprintf(fd0, "%d", dup(0)); |
48 |
> |
else |
49 |
> |
strcpy(fd0, "-1"); |
50 |
> |
sprintf(fd1, "%d", dup(1)); |
51 |
> |
/* start the display process */ |
52 |
> |
cmd[0] = buf; |
53 |
> |
cmd[1] = froot; cmd[2] = fd1; cmd[3] = fd0; |
54 |
> |
cmd[4] = NULL; |
55 |
> |
i = open_process(dpd, cmd); |
56 |
> |
if (i <= 0) |
57 |
> |
error(USER, "cannot start display process"); |
58 |
> |
if ((dpout = fdopen(dpd[1], "w")) == NULL) |
59 |
> |
error(SYSTEM, "problem opening display pipe"); |
60 |
> |
/* close dup'ed stdin and stdout */ |
61 |
> |
if (readinp) |
62 |
> |
close(atoi(fd0)); |
63 |
> |
close(atoi(fd1)); |
64 |
> |
} |
65 |
|
dpd[1] = -1; /* causes ignored error in close_process() */ |
66 |
|
inp_flags = 0; |
56 |
– |
/* close dup'ed stdin and stdout */ |
57 |
– |
if (readinp) |
58 |
– |
close(atoi(fd0)); |
59 |
– |
close(atoi(fd1)); |
67 |
|
/* check if outside */ |
68 |
|
if (vdef(OBSTRUCTIONS) && vbool(OBSTRUCTIONS)) |
69 |
|
disp_result(DS_OUTSECT, 0, NULL); |
70 |
|
/* send eye separation if specified */ |
71 |
|
if (vdef(EYESEP)) { |
72 |
< |
char fbuf[32]; |
73 |
< |
sprintf(fbuf, "%.9e", vflt(EYESEP)); |
67 |
< |
disp_result(DS_EYESEP, strlen(fbuf)+1, fbuf); |
72 |
> |
sprintf(buf, "%.9e", vflt(EYESEP)); |
73 |
> |
disp_result(DS_EYESEP, strlen(buf)+1, buf); |
74 |
|
} |
75 |
< |
/* write out hologram grids */ |
76 |
< |
for (i = 0; hdlist[i] != NULL; i++) |
77 |
< |
disp_result(DS_ADDHOLO, sizeof(HDGRID), (char *)hdlist[i]); |
75 |
> |
/* write out hologram grids & octrees */ |
76 |
> |
for (i = 0; hdlist[i] != NULL; i++) { |
77 |
> |
bcopy((void *)hdlist[i], buf, sizeof(HDGRID)); |
78 |
> |
len = sizeof(HDGRID); |
79 |
> |
n = vdef(GEOMETRY); |
80 |
> |
sfn = i<n ? nvalue(GEOMETRY,i) : |
81 |
> |
n ? nvalue(GEOMETRY,n-1) : vval(OCTREE); |
82 |
> |
strcpy(buf+len, sfn); |
83 |
> |
len += strlen(sfn) + 1; |
84 |
> |
n = vdef(PORTS); |
85 |
> |
sfn = i<n ? nvalue(PORTS,i) : n ? nvalue(PORTS,n-1) : ""; |
86 |
> |
strcpy(buf+len, sfn); |
87 |
> |
len += strlen(sfn) + 1; |
88 |
> |
disp_result(DS_ADDHOLO, len, buf); |
89 |
> |
} |
90 |
|
disp_flush(); |
91 |
|
} |
92 |
|
|
181 |
|
error(INTERNAL, "bad DR_DELSET from display process"); |
182 |
|
bundle_set(BS_DEL, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD)); |
183 |
|
break; |
184 |
+ |
case DR_VIEWPOINT: /* set target eye position */ |
185 |
+ |
if (msg.nbytes != sizeof(VIEWPOINT)) |
186 |
+ |
error(INTERNAL, "bad DR_VIEWPOINT from display process"); |
187 |
+ |
copystruct(&myeye, (VIEWPOINT *)buf); |
188 |
+ |
break; |
189 |
|
case DR_ATTEN: /* block for priority request */ |
190 |
|
if (msg.nbytes) |
191 |
|
error(INTERNAL, "bad DR_ATTEN from display process"); |
213 |
|
case DR_CLOBBER: /* clobber holodeck */ |
214 |
|
if (msg.nbytes) |
215 |
|
error(INTERNAL, "bad DR_CLOBBER from display process"); |
216 |
< |
if (!force || !ncprocs) |
216 |
> |
if (force <= 0 | ncprocs <= 0) |
217 |
|
error(WARNING, "request to clobber holodeck denied"); |
218 |
|
else { |
219 |
|
error(WARNING, "clobbering holodeck contents"); |
246 |
|
|
247 |
|
if (dpout == NULL) |
248 |
|
return(-1); |
249 |
+ |
myeye.rng = 0; |
250 |
|
disp_result(DS_SHUTDOWN, 0, NULL); |
251 |
|
fclose(dpout); |
252 |
|
dpout = NULL; |
253 |
< |
return(close_process(dpd)); |
253 |
> |
return(dpd[2]<0 ? 0 : close_process(dpd)); |
254 |
|
} |
255 |
|
|
256 |
|
|